<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    .error {
      color: red;
    }
  </style>
</head>
<body>
<!--
    required: "This field is required.",
		remote: "Please fix this field.",
		email: "Please enter a valid email address.",
		url: "Please enter a valid URL.",
		date: "Please enter a valid date.",
		dateISO: "Please enter a valid date ( ISO ).",
		number: "Please enter a valid number.",
		digits: "Please enter only digits.",
		equalTo: "Please enter the same value again.",
		maxlength: $.validator.format( "Please enter no more than {0} characters." ),
		minlength: $.validator.format( "Please enter at least {0} characters." ),
		rangelength: $.validator.format( "Please enter a value between {0} and {1} characters long." ),
		range: $.validator.format( "Please enter a value between {0} and {1}." ),
		max: $.validator.format( "Please enter a value less than or equal to {0}." ),
		min: $.validator.format( "Please enter a value greater than or equal to {0}." ),
		step: $.validator.format( "Please enter a multiple of {0}." )
-->
  <form id="myForm" action="xxx">
    <p>用户名(必须, 最小6位): <input name="username" type="text" required minlength="6"></p>
    <p>密码(必须,6到8位): <input id="password" name="pwd1" type="password" required minlength="6" maxlength="8"></p>
    <p>确认密码(与密码相同): <input name="pwd2" type="password" equalTo="#password"></p>
    <p><input type="submit" value="注册"></p>
  </form>

<script type="text/javascript" src="jquery-1.11.1.js"></script>
<script type="text/javascript" src="jquery.validate.js"></script>
<script type="text/javascript">

  /*
  声明式验证: 程序员只需要声明各种验证规则, 可以自定义验证错误信息
   */

  //对此表单开户验证
  $('#myForm').validate({
    messages: {
      username: {
        required: '用户名是必须的',
        minlength: '用户名至少为6位'
      },
      pwd1: {
        required: '密码是必须的',
        minlength: '密码至少为6位',
        maxlength: '密码最多8位'
      },
      pwd2: {
        equalTo: '必须与密码相同'
      }
    }
  })
</script>
</body>
</html>